The Most Massive Galaxies and Black Holes Allowed by $\Lambda$CDM

Abstract

Given a galaxy's stellar mass, its host halo mass has a lower limit from the cosmic baryon fraction and known baryonic physics. At z>4, galaxy stellar mass functions place lower limits on halo number densities that approach expected $\Lambda$CDM halo mass functions. High-redshift galaxy stellar mass functions can thus place interesting limits on number densities of massive haloes, which are otherwise very difficult to measure. Although halo mass functions at z<8 are consistent with observed galaxy stellar masses if galaxy baryonic conversion efficiencies increase with redshift, JWST and WFIRST will more than double the redshift range over which useful constraints are available. We calculate maximum galaxy stellar masses as a function of redshift given expected halo number densities from $\Lambda$CDM. We apply similar arguments to black holes. If their virial mass estimates are accurate, number density constraints alone suggest that the quasars SDSS J1044-0125 and SDSS J010013.02+280225.8 likely have black hole mass -- stellar mass ratios higher than the median z=0 relation, confirming the expectation from Lauer bias. Finally, we present a public code to evaluate the probability of an apparently $\Lambda$CDM-inconsistent high-mass halo being detected given the combined effects of multiple surveys and observational errors.

6 pages; matches MNRAS-accepted submission. Now includes public code to calculate the significance of outliers given Eddington bias and multiple surveys, at https://bitbucket.org/pbehroozi/lcdm-probability

References in corpus (22)

• The propagation of uncertainties in stellar population synthesis modeling I: The relevance of uncertain aspects of stellar evolution and the IMF to the derived physical properties of galaxies
• A luminous quasar at a redshift of z = 7.085
• An ultra-luminous quasar with a twelve-billion-solar-mass black hole at redshift 6.30
• A Global Three Dimensional Radiation Magneto-hydrodynamic Simulation of Super-Eddington Accretion Disks
• EMERGE - An empirical model for the formation of galaxies since $z\sim 10$
• The galaxy stellar mass function at 3.5<z<7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields
• The Current Status of Galaxy Formation
• A Supermassive Black Hole in an Ultracompact Dwarf Galaxy
• Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey
• Gemini Near-infrared Spectroscopy of Luminous z~6 Quasars: Chemical Abundances, Black Hole Masses, and MgII Absorption
• Blowin' in the wind: both `negative' and `positive' feedback in an obscured high-z Quasar
• An Over-Massive Black Hole in the Compact Lenticular Galaxy NGC1277
• Cosmology with the SPHEREX All-Sky Spectral Survey
• A Simple Technique for Predicting High-Redshift Galaxy Evolution
• Faint dwarfs as a test of DM models: WDM vs. CDM
• Correcting the z~8 Galaxy Luminosity Function for Gravitational Lensing Magnification Bias
• The rest-frame optical (900nm) galaxy luminosity function at z~4-7: abundance matching points to limited evolution in the Mstar/Mhalo ratio at z>4
• Jet-induced star formation in 3C 285 and Minkowski Object
• The Formation of Supermassive Black Holes from Population III.1 Seeds. I. Cosmic Formation Histories and Clustering Properties
• Stellar mass functions of galaxies at 4<z<7 from an IRAC-selected sample in COSMOS/UltraVISTA: limits on the abundance of very massive galaxies
• An ultra-luminous quasar at z=5.363 with a ten billion solar mass black hole and a Metal-Rich DLA at z~5
• Testing primordial non-Gaussianities on galactic scales at high redshift

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• The Cosmic Timeline Implied by the JWST High-redshift Galaxies
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